Some of the women have an advantage in that they can hide things in their hair.
You can swallow something and poop it out later. Obviously there are limitations to this all.
The most practical method is to get to your site, then lay out logs in a pattern that can be seen via drone and have someone fly a drone to determine your marker/location. Then they can find the best way in to do a supply drop.
Imagine if you could get a IPad and IPod with a small solar charger system. You could have your spouse or other record 100 messages for you and convert them into MP3 format and listen to one a day. Music. Games. Ebooks. Porn. Could store Epub/PDFs of useful survival texts. Think about just listening to music you like at night and what that would do for your morale. Watch a good movie every night.
Think about the value of another 5 pairs of socks. Another backup ferro rod. A small handgun like a Glock 26. Or one of those M3 survival rifles, with a 22 on top and a 410 shotgun on the bottom. Powdered drink mix to make the water more appeasing. Peanut butter. Cans of refried beans. Hard candy. Can you imagine having a Jolly Rancher in your pocket when you feel like crap. Salt. Raisins. And when your partner humps in, bringing in a fully loaded burrito. Multi vitamins. Vitamin D. Magnesium. Apple Cider Vinegar. Large mousetraps ( Dave Canterbury pointed out the value of these) Bicycle lights ( the flashing kind, small and lightweight and will keep animals away from you) A proper fishing rod and reel.
Bury it and work out a strategy to have it buried fast when you get a checkup.
I wonder if you could soak something in salt, then use water later to get it out of the item.
Your one photo, if you could find a liquid something, coat the back of the photo and let it dry.
The trick is not to sneak something in, the trick is to create a signal you can see from far above that allows a partner to sneak in and give you a supply drop.
If you get caught - "I found it! Like Lucas found that frying pan!"